名词
税收
1. 知识；学问；学识
Knowledge is information and understanding about a subject which a person has, or which all people have.
2. 据…所知
If you say that something is true to your knowledge or to the best of your knowledge, you mean that you believe it to be true but it is possible that you do not know all the facts.
3. 因知道…而放心
If you do something safe in the knowledge that something else is the case, you do the first thing confidently because you are sure of the second thing.